The Department of Commerce, specifically the National Institute of Standards and Technology (NIST), intends to negotiate a sole source contract with TA Instruments – Waters, LLC for thermal analysis instrumentation service, including maintenance and calibration of a differential scanning calorimeter (DSC2500) and a thermogravimetric analyzer (TGA550). The contractor will be responsible for providing one annual preventive maintenance visit for each instrument, unlimited service calls for instrument failures, and ensuring compliance with manufacturer specifications, which is critical for ongoing research in high-strength polymers and electronics packaging under the CHIPS program. Interested parties that can demonstrate their capability to meet these requirements must submit their qualifications in writing by the specified deadline to Lisa Stevens at lisa.stevens@nist.gov. The anticipated award date for this firm-fixed-price purchase order is August 31, 2025.